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(2017) List of Results National Radioactive Material Monitoring in the Water Environment in the Whole of Japan (2017) List of Results (Final Report) Results of Measurement in Public Water Areas (Water) ·····································1 Results of Measurement in Public Water Areas (Sediment) ·································7 Results of Measurement in Public Water Areas (Surrounding Environment)··········· 21 Results of Measurement of Groundwater (Water) ·········································· 36 Results of Measurement in Public Water Areas (Water) 1 Results of Measurement in Public Water Areas (Water) Sampling location General items Water Water Secchi disk Detected γ-ray emitting radionuclides Total β radioactivity Sampling Transparency Electrical No. Prefecture Property Sampling Date Weather depth depth SS Turbidity Remarks Water area Location Municipality depth (River) conductivity Measured Detection Measured Detection (m) (Lake) (mg/L) (FNU) (m) (cm) (mS/m) Radionuclides value limit value limit (m) (Bq/L) (Bq/L) (Bq/L) (Bq/L) Water purification plant intake at 1 Asahikawa City 2017/8/24 Cloudy 1.1 0.1 >100 - 8.3 2 <1 K-40 0.056 0.025 ND 0.026 Ishikari River in Asahikawa City Ishikari River Intake at the Shirakawa water 2 Sapporo City 2017/9/27 Sunny 2.0 0.1 68 - 11.2 7 7 K-40 0.054 0.028 0.043 0.024 purification plant in Sapporo City Nakashibetsu Bridge 3 Teshio River (Intake at the Higashiyama water Shibetsu City 2017/8/23 Cloudy 0.6 0.1 >100 - 6.4 2 1 K-40 0.027 0.024 ND 0.025 purification plant in Shibetsu City) 4 Tokoro River Tadashi Bridge Kitami City 2017/8/25 Sunny 0.6 0.1 >100 - 16.3 7 1 K-40 0.10 0.041 0.079 0.027 Hokkaido Intake at the Aikoku water 5 Prefecture Kushiro River Kushiro City 2017/8/28 Sunny 1.0 0.1 88 - 17.6 18 2 K-40 0.069 0.040 0.057 0.025 purification plant in Kushiro City 6 Tokachi River Nantai Bridge Obihiro City 2017/8/28 Sunny 1.2 0.1 >100 - 6.8 1 <1 K-40 0.064 0.022 0.056 0.025 K-40 0.068 0.024 7 Sarugawa River Sarugawa Bridge (Tomigawa) Hidaka Town 2017/10/6 Sunny 1.0 0.1 12 - 14.3 41 30 0.059 0.027 Pb-212 0.0034 0.0015 Mitsumoribashi Bridge (Before the 8 Matsukura River Hakodate City 2017/8/30 Sunny 0.4 0.1 >100 - 7.2 1 <1 K-40 0.047 0.027 0.034 0.024 confluence with Torasawa River) Shiribeshi- Intake at the Kitahiyama simple water Be-7 0.016 0.011 9 Setana Town 2017/8/30 Sunny 0.4 0.1 >100 - 10.6 2 <1 0.060 0.026 toshibetsu River plant in Kitahiyama Town K-40 0.079 0.020 10 Iwaki River Tsugaru-ohashi Bridge Nakadomari Town 2017/8/31 Sunny 2.9 0.1 44 - 16.0 11 8 K-40 0.084 0.027 0.057 0.027 Aomori Prefecture 11 Rivers Mabechi River Shiriuchi Bridge Hachinohe City 2017/9/1 Sunny 1.7 0.1 49 - 12.4 10 5 K-40 0.064 0.035 0.053 0.025 12 Mabechi River Fugane Bridge Ninohe City 2017/8/30 Sunny 1.8 0.1 52 - 10.1 6 2 K-40 0.048 0.031 0.036 0.026 Iwate 13 Heigawa River Miyako Bridge Miyako City 2017/9/9 Sunny 1.2 0.1 >100 - 381 1 <1 K-40 0.68 0.070 0.61 0.064 Prefecture 14 Kitakami River Chitose Bridge Ichinoseki City 2017/9/11 Cloudy 2.3 0.1 >100 - 12.5 2 1 K-40 0.055 0.028 0.037 0.025 K-40 0.074 0.026 15 Miyagi Abukuma River Iwanuma (Abukuma Bridge) Ichinoseki City 2017/8/24 Rain 1.0 0.1 42 - 14.9 9 4 Cs-134 0.0027 0.0014 0.074 0.026 Prefecture Cs-137 0.022 0.0013 16 Natori River Yuriage-ohashi Bridge Natori City 2017/9/8 Sunny 0.7 0.1 97 - 308 8 2 K-40 0.57 0.083 0.51 0.050 17 Akita Yoneshiro River Noshiro Bridge Noshiro City 2017/9/5 Sunny 2.3 0.1 72 - 16.8 3 2 K-40 0.053 0.031 0.038 0.025 18 Prefecture Omono River Kurose Bridge Akita City 2017/9/6 Sunny 2.9 0.1 97 - 11.7 4 1 K-40 0.045 0.022 0.034 0.026 19 Yamagata Mogami River Ryou Bridge Sakata City 2017/9/7 Cloudy 3.0 0.1 64 - 12.5 9 2 K-40 0.043 0.022 0.049 0.026 20 Prefecture Akagawa River Shinkawa Bridge Sakata City 2017/8/22 Rain 0.5 0.1 >100 - 13.2 2 1 K-40 0.042 0.024 0.036 0.024 K-40 0.031 0.026 21 Agano River Shingo Dam Kitakata City 2017/9/4 Sunny 6.6 0.1 >100 - 8.0 4 1 0.034 0.025 Cs-137 0.0038 0.0010 K-40 0.084 0.030 Fukushima 22 Abukuma River Taisho Bridge (Fushiguro) Date City 2017/9/11 Cloudy 1.2 0.1 >100 - 18.2 5 1 0.050 0.027 Prefecture Cs-134 0.0025 0.0012 Cs-137 0.018 0.0012 K-40 0.067 0.023 23 Kujigawa River Takachihara Bridge Yamatsuri Town 2017/9/5 Sunny 1.4 0.1 >100 - 12.0 2 <1 0.063 0.024 Cs-137 0.0015 0.0011 * This preliminary report does not contain counting errors concerning activity concentrations. 2 Results of Measurement in Public Water Areas (Water) Sampling location General items Water Water Secchi disk Detected γ-ray emitting radionuclides Total β radioactivity Sampling Transparency Electrical No. Prefecture Property Sampling Date Weather depth depth SS Turbidity Remarks Water area Location Municipality depth (River) conductivity Measured Detection Measured Detection (m) (Lake) (mg/L) (FNU) (m) (cm) (mS/m) Radionuclides value limit value limit (m) (Bq/L) (Bq/L) (Bq/L) (Bq/L) K-40 0.17 0.022 Center (Surface layer) 0.1 36 32.7 14 9 Cs-134 0.0033 0.00088 0.17 0.028 Cs-137 0.024 0.00096 24 Lake Lake Kasumigaura Miho Village 2017/9/6 Rain 6.1 0.85 Ibaraki K-40 0.16 0.021 Prefecture Center (Bottom layer) 5.1 36 32.7 14 9 Cs-134 0.0030 0.00085 0.18 0.026 Cs-137 0.024 0.00086 K-40 0.099 0.027 25 Kokai River Fumimaki Bridge Toride City 2017/10/2 Cloudy 1.6 0.1 45 - 22.3 33 6 0.12 0.028 Cs-137 0.0083 0.0015 K-40 0.073 0.034 26 Nakagawa River Shinnaka Bridge Nakagawa Town 2017/9/8 Sunny 0.6 0.1 >100 - 15.8 2 <1 0.054 0.024 Tochigi Cs-137 0.0098 0.0014 Prefecture K-40 0.042 0.022 27 Kinugawa River Kinugawa Bridge (Hoshakuji Temple) Utsunomiya City 2017/9/29 Sunny 2.5 0.1 >100 - 10.2 <1 <1 0.047 0.026 Cs-137 0.0012 0.0010 Chiyoda Town K-40 0.093 0.035 28 Tonegawa River Toneozeki Weir /Gyoda City 2017/8/29 Sunny 0.9 0.1 68 - 19.6 7 2 0.074 0.025 Gunma (Saitama Prefecture) Cs-137 0.0026 0.0015 Prefecture K-40 0.070 0.023 29 Rivers Watarase River Watarase-ohashi Bridge Tatebayashi City 2017/8/29 Sunny 3.5 0.1 >100 - 18.7 <1 <1 0.057 0.026 Cs-137 0.0022 0.0011 30 Kugebashi Bridge Kumagaya City 2017/9/7 Cloudy 0.6 0.1 >100 - 20.8 2 <1 K-40 0.071 0.026 0.050 0.027 Arakawa River K-40 0.097 0.030 31 Akigase Intake Weir Saitama City/Shiki City 2017/9/8 Sunny 2.8 0.1 >100 - 24.3 3 1 0.064 0.025 Saitama Cs-137 0.0021 0.0011 Prefecture Nagareyama City K-40 0.097 0.027 32 Edogawa River Nagareyama Bridge (Chiba Prefecture) 2017/8/28 Sunny 0.7 0.1 54 - 19.0 28 13 0.074 0.026 /Misato City Cs-137 0.0046 0.0015 K-40 0.12 0.024 33 Tonegawa River Kakozeki Weir Tonosho Town 2017/10/3 Cloudy 4.3 0.1 48 - 21.6 9 6 0.11 0.027 Cs-137 0.0071 0.0012 34 Ichinomiya River Nakano Bridge Ichinomiya Town 2017/9/11 Sunny 2.6 0.1 52 - 2000 6 4 K-40 4.0 0.088 3.9 0.32 K-40 0.12 0.017 Lower area of water purification plant Chiba intake 0.1 23 27.5 20 11 0.11 0.028 Prefecture Cs-134 0.0033 0.00092 (Surface layer) Cs-137 0.025 0.00083 35 Lake Lake Inbanuma Sakura City 2017/9/15 Sunny 1.4 0.50 K-40 0.13 0.019 Lower area of water purification plant intake 0.4 18 28.5 34 19 Cs-134 0.0036 0.0010 0.12 0.025 (Bottom layer) Cs-137 0.027 0.0011 * This preliminary report does not contain counting errors concerning activity concentrations. 3 Results of Measurement in Public Water Areas (Water) Sampling location General items Water Water Secchi disk Detected γ-ray emitting radionuclides Total β radioactivity Sampling Transparency Electrical No. Prefecture Property Sampling Date Weather depth depth SS Turbidity Remarks Water area Location Municipality depth (River) conductivity Measured Detection Measured Detection (m) (Lake) (mg/L) (FNU) (m) (cm) (mS/m) Radionuclides value limit value limit (m) (Bq/L) (Bq/L) (Bq/L) (Bq/L) K-40 0.071 0.034 36 Edogawa River Shinkatsushika Bridge Katsushika City 2017/8/29 Sunny 0.5 0.1 63 - 18.9 8 4 0.038 0.027 Cs-137 0.0035 0.0014 37 Tokyo Tamagawa River Haijima raw water supply point Akishima City 2017/8/23 Sunny 1.2 0.1 >100 - 12.1 2 2 K-40 0.033 0.025 ND 0.026 38 Metropolis Sumida River Ryogoku Bridge Chuo City/Sumida City 2017/8/25 Sunny 2.2 0.1 63 - 545 12 6 K-40 1.0 0.086 0.80 0.16 Koto City K-40 1.3 0.085 39 Arakawa River Kasai Bridge 2017/9/11 Sunny 2.0 0.1 50 - 745 17 6 1.2 0.10 /Edogawa City Cs-137 0.011 0.0035 K-40 1.8 0.085 40 Tsurumi River Rinko Tsurumigawa Bridge Yokohama City 2017/9/13 Sunny 4.5 0.1 >100 - 914 2 2 1.4 0.20 Kanagawa Cs-137 0.0039 0.0038 41 Prefecture Sagami River Banyu Bridge Hiratsuka City 2017/9/5 Sunny 2.8 0.1 >100 - 2890 4 6 K-40 5.8 0.090 5.2 0.69 42 Sakawa River Sakawa Bridge Odawara City 2017/9/4 Cloudy 0.5 0.1 >100 - 17.3 4 2 K-40 0.070 0.031 0.049 0.025 43 Shinano River Heisei-ohashi Bridge Niigata City 2017/9/5 Sunny 5.0 0.1 57 - 13.6 12 4 K-40 0.052 0.023 0.053 0.025 Niigata K-40 0.035 0.027 44 Prefecture Agano River Oun Bridge Niigata City 2017/9/5 Sunny 1.9 0.1 >100 - 7.6 4 2 ND 0.026 Cs-137 0.0014 0.0010 Toyama 45 Jinzu River Hagiura Bridge Toyama City 2017/9/15 Sunny 5.3 0.1 >100 - 33.5 3 <1 K-40 0.068 0.024 0.041 0.028 Prefecture 46 Saigawa River Okuwa Bridge Kanazawa City 2017/9/14 Sunny 1.3 0.1 96 - 7.8 3 3 - - - ND 0.024 Ishikawa 47 Prefecture Tedori River Hakusangoguchi Dike Hakusan City 2017/9/16 Sunny 1.5 0.1 62 - 11.8 12 5 K-40 0.045 0.020 0.055 0.026 48 Fukui Rivers Kuzuryu River Fuseda Bridge Fukui City 2017/9/12 Cloudy 1.3 0.1 >100 - 752 8 2 K-40 1.3 0.086 1.3 0.18 49 Prefecture Kitagawa River Takatsuka Bridge Obama City 2017/9/11 Cloudy 0.7 0.1 >100 - 11.8 1 <1 K-40 0.026 0.023 0.026 0.024 50 Yamanashi Sagami River Katsuragawa Bridge Uenohara City 2017/8/31 Cloudy 2.8 0.1 >100 - 13.8 2 <1 K-40 0.038 0.033 0.037 0.026 Prefecture 51 Fujikawa River Nanbu Bridge Nanbu Town 2017/8/30 Sunny 0.5 0.1
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